ive been fighting my camry for about a week or more,when i first start the car it runs pretty good for the first few minz,then it starts with an itermitten cough or miss,the things ive tried so far are as follows,fuel pump,fuel filter,tps,cleaned egr valve,iac,vsv,tcs,egr vacuum module,and have reset ecm many times,thus far the only real thing i can find wrong is there is little or no vacuum coming from throttle body to egr module,not sure why???and no vacuum at egr ?? any ideas would be greatly appreciated. thx charlie.

 

EGR is off at idle. Should be vacuum to VSV, then off at EGR valve.

 

thx for reply,i tried revving the engine upto like 5k still no vacuum,also tried replacing vsv,im truly going crazy on this one lol,but thx again joey.